EP 0004791 A3 19791031 - CATALYST COMPONENT FOR ALPHA-OLEFIN POLYMERIZATION AND USE THEREOF

Title (en)

CATALYST COMPONENT FOR ALPHA-OLEFIN POLYMERIZATION AND USE THEREOF

Publication

EP 0004791 A3 19791031 (EN)

Application

EP 79300590 A 19790410

Priority

JP 4214978 A 19780412

Abstract (en)

[origin: EP0004791A2] A supported titanium catalyst component for use in propylene polymerization is prepared by copulverizing a mixture of magnesium dichloride, titanium tetrachloride- ethylbenzoate 1: 1 adduct and hexachloroethane for 20 to 44 hrs., and then treating the resulting titanium-containing solid with n-heptane solution of hexachloroethane. Bulk polymerization of propylene in the presence of H<sub>2</sub> with the catalyst composed of the supported titanium catalyst component and the organo aluminum catalyst component composed of triisobutyl aluminum and ethylbenzoate at 68°C. for half an hour gives higher catalyst efficiency (above 200,000 g PP/g-Ti) and sufficient heptane insolubles (92 to 97%).

IPC 1-7

C08F 10/00; C08F 4/64; C08F 4/02

IPC 8 full level

C08F 4/00 (2006.01); C08F 4/60 (2006.01); C08F 4/64 (2006.01); C08F 10/00 (2006.01)

CPC (source: EP US)

C08F 10/00 (2013.01 - EP US)

Citation (search report)

FR 2200290 A1 19740419 - MONTEDISON SPA [IT]
FR 2259842 A1 19750829 - MITSUI PETROCHEMICAL IND [JP]
FR 2343506 A1 19771007 - TOA NENRYO KOGYO KK [JP]
FR 2314760 A1 19770114 - ICI LTD [GB]

Designated contracting state (EPC)

BE DE FR GB IT NL

DOCDB simple family (publication)

EP 0004791 A2 19791017; EP 0004791 A3 19791031; EP 0004791 B1 19830323; CA 1140523 A 19830201; DE 2965061 D1 19830428; JP S54135691 A 19791022; JP S595202 B2 19840203; US 4246136 A 19810120

DOCDB simple family (application)

EP 79300590 A 19790410; CA 325342 A 19790411; DE 2965061 T 19790410; JP 4214978 A 19780412; US 2908279 A 19790411